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ohci: allocate timer only once.

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Allocate timer once, at init time, instead of allocating/freeing
it all the time when starting/stopping the bus.  Simplifies the
code, also fixes bugs (memory leak) due to missing checks whenever
the time is already allocated or not.

Cc: Prasad J Pandit <pjp@fedoraproject.org>
Reported-by: Zuozhi Fzz <zuozhi.fzz@alibaba-inc.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Gerd Hoffmann 2016-02-22 09:50:11 +01:00
parent 5f77e06baa
commit fa1298c2d6
1 changed files with 8 additions and 26 deletions
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34
hw/usb/hcd-ohci.c
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@ -1347,16 +1347,6 @@ static void ohci_frame_boundary(void *opaque)
*/
static int ohci_bus_start(OHCIState *ohci)
{
ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
ohci_frame_boundary,
ohci);
if (ohci->eof_timer == NULL) {
trace_usb_ohci_bus_eof_timer_failed(ohci->name);
ohci_die(ohci);
return 0;
}
trace_usb_ohci_start(ohci->name);
/* Delay the first SOF event by one frame time as
@ -1373,11 +1363,7 @@ static int ohci_bus_start(OHCIState *ohci)
static void ohci_bus_stop(OHCIState *ohci)
{
trace_usb_ohci_stop(ohci->name);
if (ohci->eof_timer) {
timer_del(ohci->eof_timer);
timer_free(ohci->eof_timer);
}
ohci->eof_timer = NULL;
timer_del(ohci->eof_timer);
}
/* Sets a flag in a port status register but only set it if the port is
@ -1907,6 +1893,9 @@ static void usb_ohci_init(OHCIState *ohci, DeviceState *dev,
usb_packet_init(&ohci->usb_packet);
ohci->async_td = 0;
ohci->eof_timer = timer_new_ns(QEMU_CLOCK_VIRTUAL,
ohci_frame_boundary, ohci);
}
#define TYPE_PCI_OHCI "pci-ohci"
@ -1976,6 +1965,9 @@ static void usb_ohci_exit(PCIDevice *dev)
if (!ohci->masterbus) {
usb_bus_release(&s->bus);
}
timer_del(s->eof_timer);
timer_free(s->eof_timer);
}
static void usb_ohci_reset_pci(DeviceState *d)
@ -2041,23 +2033,13 @@ static bool ohci_eof_timer_needed(void *opaque)
{
OHCIState *ohci = opaque;
return ohci->eof_timer != NULL;
}
static int ohci_eof_timer_pre_load(void *opaque)
{
OHCIState *ohci = opaque;
ohci_bus_start(ohci);
return 0;
return timer_pending(ohci->eof_timer);
}
static const VMStateDescription vmstate_ohci_eof_timer = {
.name = "ohci-core/eof-timer",
.version_id = 1,
.minimum_version_id = 1,
.pre_load = ohci_eof_timer_pre_load,
.needed = ohci_eof_timer_needed,
.fields = (VMStateField[]) {
VMSTATE_TIMER_PTR(eof_timer, OHCIState),